Here’s something of an artistic surprise, if not a theological innovation: A terracotta Virgin Mary with Christ child & slightly older John the Baptist child.
It’s fairly good! The Renaissance! Now, for the surprise, here’s what it looks like from behind:
Yes, the Virgin is resting on an eagle! There’s another one on the other side:
Nobody notices, it’s tucked away in a corner. I’ve never seen such a Holy Family scene before!